In some cases you might been asked to reboot Windows to complete
installation process, because of using on different Microsoft Visual C++
runtimes by CouchDB.

Note

Upgrading note

It’s recommended to uninstall previous CouchDB version before upgrading,
especially if the new one is built against different Erlang release.
The reason is simple: there may be leftover libraries with alternative or
incompatible versions from old Erlang release that may create conflicts,
errors and weird crashes.

In this case, make sure you backup of your local.ini config and CouchDB
database/index files.